Undergarment gusset



FIG. 1 is a perspective view of the undergarment gusset as used in an undergarment with the undergarment shown in broken lines for context (the broken lines of the undergarment and those shown on the undergarment gusset represent unclaimed features);

FIG. 2 is an exploded view of the undergarment gusset as used in an undergarment with the undergarment shown in broken lines for context (the broken lines of the undergarment and those shown on the undergarment gusset represent unclaimed features); and,

FIG. 3 is a plan view of the claimed undergarment gusset (the broken lines on the undergarment gusset represent unclaimed features). 

CLAIM The ornamental design for an undergarment gusset, substantially as shown and described. 